Class Needle::Pipeline::Element
In: lib/needle/pipeline/element.rb
Parent: Object

The base class of instantiation pipeline elements. All subclasses MUST implement is the call method, to define the logic that instances of that pipeline element should perform when invoked.

Methods

Included Modules

Comparable

Attributes

default_priority  [R]  The default priority to use for elements of this type.
name  [R]  The name of this element (may be nil).
options  [R]  The hash of options that were given to this element.
priority  [R]  The priority of this element, used to determine ordering. Higher ordered elements are invoked before lower-ordered elements.
service_point  [R]  The service definition that this element belongs to.
succ  [RW]  The next element in the chain. This value is only valid during pipeline execution—its value should not be relied upon at any other time.

Public Class methods

Create a new element instance with the given name and priority. This will call initialize_element, so that subclasses only need to implement that method if they have any initialization logic to perform.

Set the default priority for elements of this type. Subclasses may use this method to set their default priority.

Public Instance methods

Orders elements by their priority.

[]( *args )

Alias for call

Invoke this element’s logic.

Invoked by the constructor to perform any subclass-specific initialization logic.

Invoked by Pipeline::Collection#reset!. Subclasses of Element that save any kind of state should override this method to clear that state on demand.

[Validate]